JP6789758B2 - Electric work machine - Google Patents

Description

The present disclosure relates to a rechargeable electric work machine in which a battery pack is detachably configured.

According to Patent Document 1, by mounting the battery pack on the tool body, the terminals provided on the terminal block of the tool body and the terminals on the battery pack side are connected, and power can be supplied from the battery pack to the tool body. A power tool configured to be is disclosed.

In various electric work machines such as the electric tool described in Patent Document 1 in which the battery pack can be attached to and detached from the main body, the power of the battery pack is usually applied to each terminal of the terminal block on the main body side. A lead wire for supplying into the main body is connected.

As a method of connecting a lead wire to a terminal of a terminal block, a connection method using a receptacle is known. Specifically, the lead wire is crimped to the receptacle, and the receptacle is fitted to the terminal of the terminal block to electrically and mechanically connect the lead wire and the terminal of the terminal block.

Japanese Unexamined Patent Publication No. 2014-37018

The connection method using the receptacle has the advantage of good workability, but poor contact between the receptacle and the terminal due to vibration generated when the electric work machine operates and vibration during various handling other than operation. And sliding friction may occur, which may increase the contact resistance between the two.

Even if the contact resistance increases, it does not matter as long as the current supplied from the battery pack to the main body is small, but in recent years, the current supplied from the battery pack to the main body has increased due to the increase in power of the electric work machine. ing.

The larger the current supplied from the battery pack to the main body, the more the influence of the contact resistance between the receptacle and the terminal becomes apparent. Specifically, the heat generated in the contact portion between the receptacle and the terminal and its vicinity becomes large. When the heat generation becomes large, for example, the resin parts constituting the terminal block may be melted, or the operation of the circuit near the terminal block may be affected by the heat.

In one aspect of the present disclosure, it is desirable that the terminal block on the main body side to which the battery pack is attached / detached in the electric work machine can stably maintain the electrical connection state between the terminal and the lead wire.

The electric work machine in one aspect of the present disclosure includes a mounting portion, a load portion, a terminal block, and a plurality of electrical wirings for electrically connecting the terminal block and the load portion, which are configured so that the battery pack can be attached and detached. And. The load unit is operated by the electric power supplied from the battery pack when the battery pack is mounted on the mounting unit. The terminal block is connected to the battery pack when the battery pack is mounted on the mounting portion, and includes a positive electrode connection terminal, a negative electrode connection terminal, a positive electrode side wiring fixing portion, and a negative electrode side wiring fixing portion. ..

The positive electrode connection terminal is a terminal that is connected to the positive electrode terminal of the battery pack when the battery pack is mounted on the mounting portion, and has a positive electrode side wiring contact portion. Of the plurality of electrical wirings, the positive electrode side wiring contact portion is in contact with the positive electrode side wiring for electrically connecting the positive electrode connection terminal and the load portion.

The negative electrode connection terminal is a terminal that is connected to the negative electrode terminal of the battery pack when the battery pack is mounted on the mounting portion, and has a negative electrode side wiring contact portion. Of the plurality of electrical wirings, the negative electrode side wiring contact portion is in contact with the negative electrode side wiring for electrically connecting the negative electrode connection terminal and the load portion.

The positive electrode side wiring fixing portion has a screw, and the tightening force of the screw acts on the positive electrode side wiring in the direction of contacting the positive electrode side wiring contact portion, and the tightening force causes the positive electrode side wiring to be the positive electrode side wiring. It is configured to be fixed in a state of being pressed against the contact portion.

The negative electrode side wiring fixing portion has a screw, and the tightening force of the screw acts on the negative electrode side wiring in the direction of contacting the negative electrode side wiring contact portion, and the negative electrode side wiring is changed to the negative electrode side wiring by the tightening force. It is configured to be fixed in a state of being pressed against the contact portion.

According to such a configuration, the positive electrode side wiring is fixed by being pressed against the positive electrode side wiring contact portion of the positive electrode connection terminal by the tightening force of the screw at the positive electrode side wiring fixing portion. Similarly, the negative electrode side wiring is also pressed and fixed to the negative electrode side wiring contact portion of the negative electrode connection terminal by the tightening force of the screw at the negative electrode side wiring fixing portion. Therefore, the electrical connection state between each connection terminal of the terminal block and the lead wire can be stably maintained regardless of the vibration generated when the electric work machine is used or handled.

The positive electrode side wiring fixing portion and the negative electrode side wiring fixing portion may be configured as follows. That is, the positive electrode side wiring fixing portion may have a positive electrode side insertion member, a positive electrode side screw, and a positive electrode side pressing member.

The positive electrode side insertion member has a positive electrode side insertion space inside, which is a space where the positive electrode side wiring contact portion is arranged and the positive electrode side wiring is inserted, and is a hole for inserting the positive electrode side wiring into the positive electrode side insertion space. At least one positive electrode side insertion port is formed. The positive electrode side screw is a screw provided so as to be inserted into the positive electrode side insertion space from the outside of the positive electrode side insertion space with respect to the screw insertion port formed in the positive electrode side insertion member. The positive electrode side pressing member is a plate-shaped member arranged in the positive electrode side insertion space, and the plate surface is arranged so as to face the positive electrode side wiring contact portion, and follows the screwing of the positive electrode side screw. It is configured to move to the positive electrode side wiring contact portion side. Then, in the positive electrode side wiring fixing portion, the tightening force of the positive electrode side screw acts on the positive electrode side wiring inserted between the positive electrode side pressing member and the positive electrode side wiring contact portion via the positive electrode side pressing member, thereby causing the positive electrode. The side wiring is configured to be in pressure contact with the positive electrode side wiring contact portion.

There are various possible targets for screwing the positive electrode side screw. For example, it is conceivable that the positive electrode side insertion port is formed as a screw hole with a thread groove, and the positive electrode side screw is screwed into the screw hole. Further, for example, a form in which a screw hole with a thread groove is formed in the positive electrode side pressing member, and the positive electrode side screw inserted into the positive electrode side insertion port is screwed into the positive electrode side pressing member in the positive electrode side insertion space is also considered. Be done. Of course, these are just examples. The same applies to the screwing of the negative electrode side screw described later.

Similarly, the negative electrode side wiring fixing portion may have a negative electrode side insertion member, a negative electrode side screw, and a negative electrode side pressing member. The negative electrode side insertion member has a negative electrode side insertion space inside, which is a space where the negative electrode side wiring contact portion is arranged and the negative electrode side wiring is inserted, and is a hole for inserting the negative electrode side wiring into the negative electrode side insertion space. At least one negative electrode side insertion port is formed. The negative electrode side screw is a screw provided so as to be inserted into the negative electrode side insertion space from the outside of the negative electrode side insertion space with respect to the screw insertion port formed in the negative electrode side insertion member. The negative electrode side pressing member is a plate-shaped member arranged in the negative electrode side insertion space, and the plate surface is arranged so as to face the negative electrode side wiring contact portion, and follows the screwing of the negative electrode side screw. It is configured to move to the negative electrode side wiring contact portion side. Then, in the negative electrode side wiring fixing portion, the tightening force of the negative electrode side screw acts on the negative electrode side wiring inserted between the negative electrode side pressing member and the negative electrode side wiring contact portion via the negative electrode side pressing member, so that the negative electrode side is negative electrode. The side wiring is configured to be in pressure contact with the negative electrode side wiring contact portion.

According to such a configuration, both the positive electrode side wiring and the negative electrode side wiring are pressed against the wiring contact portion by receiving the tightening force of the screw via the pressing member. In other words, each wiring is fixed while being sandwiched between the pressing member and the wiring contact portion. Therefore, the electrical connection state between each connection terminal of the terminal block and the lead wire can be maintained more stably.

The positive electrode side insertion openings may be formed on a plurality of side surfaces of the positive electrode side insertion member that are not on the same plane as each other. Then, the positive electrode side wiring is inserted into the positive electrode side insertion space through the positive electrode side insertion port by being inserted into any one of the positive electrode side insertion ports formed on the plurality of side surfaces. May be good. The number of side surfaces on which the positive electrode side insertion port is formed may be appropriately determined for two or more.

Further, the negative electrode side insertion port may also be formed on a plurality of side surfaces of the negative electrode side insertion member that are not on the same plane as each other. Then, the negative electrode side wiring is inserted into the negative electrode side insertion space through the negative electrode side insertion port by being inserted into any one of the negative electrode side insertion ports formed on the plurality of side surfaces. May be good. Also in this case, the number of side surfaces on which the negative electrode side insertion port is formed may be appropriately determined in two or more.

According to such a configuration, the insertion portion of the positive electrode side wiring with respect to the positive electrode side insertion member can be selected from a plurality of positive electrode side insertion ports formed on different side surfaces. The insertion site of the negative electrode side wiring with respect to the negative electrode side insertion member can also be selected from a plurality of negative electrode side insertion ports formed on different side surfaces.

Therefore, depending on the model of the electric work machine on which the terminal block is mounted, it is possible to select the insertion port suitable for the model from a plurality of insertion ports and insert the electrical wiring, increasing the versatility of the terminal block. be able to.

Even if the positive electrode side wiring and the negative electrode side wiring are both laid so as to extend in the same direction from the terminal block by being inserted into the positive electrode side insertion port and the negative electrode side insertion port formed on the same side surface of the terminal block. Good. Here, the "same direction" is not limited to the same direction in a strict sense, and may not be exactly the same as long as the desired effect is achieved.

According to such a configuration, each wiring can be efficiently laid, particularly when the connection destinations of the positive electrode side wiring and the negative electrode side wiring exist in the same direction when viewed from the terminal block.
More specifically, the electric work machine laid so that the positive electrode side wiring and the negative electrode side wiring extend in the same direction from the terminal block as described above may have the following configuration. That is, the electric work machine may include a hollow housing. The housing includes a grip portion that is formed to extend in the axial direction with a specific axis as a substantially central axis and is gripped by the user of the electric work machine, and is an axial end of the housing with respect to the grip portion. A mounting portion and a terminal block may be provided on the portion. Then, the positive electrode side wiring and the negative electrode side wiring may be laid in the housing so as to extend from the terminal block toward the grip portion side in the axial direction.

According to such a configuration, when the connection destinations of the positive electrode side wiring and the negative electrode side wiring exist in the axial direction of the grip portion when viewed from the terminal block, each wiring is efficiently laid to the connection destination. Can be done.

Further, the electric work machine laid so that the positive electrode side wiring and the negative electrode side wiring extend in the same direction from the terminal block may have the following configuration more specifically. That is, the electric work machine may include a motor that is rotated by electric power from the battery pack as a load unit. The positive electrode side wiring and the negative electrode side wiring may be laid so as to extend from the terminal block in the axial direction of the rotation axis of the motor.

According to such a configuration, in particular, the terminal block exists in the axial direction of the rotation axis when viewed from the motor, and the connection destinations of the positive electrode side wiring and the negative electrode side wiring exist on the motor side when viewed from the terminal block. If so, each wiring can be efficiently laid to the connection destination.

The positive electrode side wiring and the negative electrode side wiring are laid so as to extend in different directions from the terminal block by being inserted into the positive electrode side insertion port and the negative electrode side insertion port formed on different side surfaces of the terminal block. May be good.

According to such a configuration, each wiring can be efficiently laid, particularly when the connection destinations of the positive electrode side wiring and the negative electrode side wiring exist in different directions from the terminal block. Further, for example, a situation in which the connection destination of each wiring exists in the same direction as viewed from the terminal block, but each wiring cannot be extended from the side surface of the terminal block on the direction side in which the connection destination exists. Even in the case of, by forming the positive electrode side insertion port on one of the two side surfaces different from the side surface and forming the negative electrode side insertion port on the other side, each wiring is extended from each insertion port and finally. Each wiring can be laid to the connection destination in the same direction.

As a more specific configuration when the positive electrode side wiring and the negative electrode side wiring are laid so as to extend from different side surfaces of the terminal block in different directions, for example, the following configuration may be adopted. That is, a positive electrode side insertion port is formed on one of both side surfaces parallel to each other in the terminal block and the positive electrode side wiring is inserted, and a negative electrode side insertion port is formed on the other side of both side surfaces and the negative electrode side wiring is inserted. As a result, the positive electrode side wiring and the negative electrode side wiring may be laid so as to extend 180 degrees from the terminal block in opposite directions. Here, "180 degree opposite" is not limited to 180 degree opposite in a strict sense, and may not be exactly 180 degree opposite as long as the desired effect is achieved.

According to such a configuration, each wiring can be efficiently laid, particularly when the connection destinations of the positive electrode side wiring and the negative electrode side wiring are present in directions 180 degrees opposite to each other when viewed from the terminal block. Also, for example, when it is difficult to extend each wiring from the same side surface of the terminal block in the same direction, the wiring is once extended 180 degrees in the opposite direction, and then the wiring is extended in the same direction. The method can be adopted.

As the load unit, a control unit in which the positive electrode side wiring and the negative electrode side wiring are directly connected to control the operation of the electric working machine may be provided so as to face a part of a specific side surface area of the terminal block. .. In that case, the positive electrode side wiring and the negative electrode side wiring are both terminals by being inserted into the positive electrode side insertion port and the negative electrode side insertion port formed in the region where the control unit on the specific side surface does not face each other in the terminal block. It may be laid so as to extend in the same direction from the table.

According to such a configuration, the positive electrode side wiring and the negative electrode side wiring can be extended from the same side surface of the terminal block and the side surface facing the control unit to lay the control unit to which the control unit is connected. .. Therefore, the positive electrode side wiring and the negative electrode side wiring can be laid stably and efficiently.

Further, when the above control unit is provided as a load unit so as to face a specific side surface of the terminal block, the positive electrode side wiring and the negative electrode side wiring are one different from the specific side surface in the terminal block. By being inserted into the positive electrode side insertion port and the negative electrode side insertion port formed on the side surface, they may be laid so as to extend from the terminal block in the same direction and in a direction parallel to the specific side surface.

According to such a configuration, even in a situation where it is difficult to extend each wiring from a specific side surface of the terminal block, each wiring can be appropriately laid by extending each wiring from a side surface different from the specific side surface. .. Further, for example, even if each wiring is connected to a control unit but each wiring cannot be extended from a specific side surface to which the control unit faces, the specific side surface is once. It is possible to adopt a wiring laying method in which wiring is extended from different sides and wiring is laid from there toward each control unit.

In particular, for example, when the entire surface of a specific side surface faces the control unit, it is expected that it will be difficult to put out each wiring from the specific side surface, which is particularly effective in such a case.

At least one of the positive side insertion port and the negative side insertion port is provided with a tapered portion and a wiring holding portion, and is configured so that the electrical wiring to be inserted is inserted into the insertion space via the tapered portion and the wiring holding portion. You may be. Tapered portion is formed so that the opening area gradually decreases toward the interior of the insertion space electric wire insertion target is inserted. The wiring holding portion is a tubular member that is continuously provided from the end portion of the tapered portion on the insertion space side toward the insertion space.

According to such a configuration, the electrical wiring to be inserted can be easily inserted into both the positive electrode side wiring fixing portion and the negative electrode side wiring fixing portion via the tapered portion. Moreover, the electrical wiring inserted through the tapered portion can be appropriately held by the wiring holding portion. Since the electrical wiring can be held by the wiring holding portion, the stability of the electrical connection state between each wiring and the terminal can be further improved.

When a plurality of positive electrode side insertion ports are formed, all of the plurality of positive electrode side insertion ports may be provided with the taper portion and the wiring holding portion described above, or only one or a specific plurality of positive electrode side insertion ports may be described above. It may be configured to include a tapered portion and a wiring holding portion. The same applies to the negative electrode side insertion slot.

The terminal block may further include signal connection terminals. The signal connection terminal is a terminal that is connected to a signal input / output terminal provided on the battery pack when the battery pack is mounted on the mounting portion. Further, the plurality of electrical wirings may include signal-side wirings for electrically connecting the signal connection terminal and the load unit. Then, the end of the signal-side wiring opposite to the end connected to the load portion can be freely inserted and removed from the signal-side wiring connection portion formed at the end of the signal connection terminal. It may be configured so that the signal side wiring is connected to the signal connection terminal by being connected to the receptacle and the receptacle being fitted to the signal side wiring connection portion.

The wiring connection method using the receptacle can be realized with a relatively simple configuration as compared with the wiring connection method using the positive electrode side wiring fixing portion and the negative electrode side wiring fixing portion. Further, the value of the current flowing through the signal side wiring is usually smaller than the value of the current flowing through the positive electrode side wiring and the negative electrode side wiring, and problems associated with an increase in contact resistance between the wiring and the terminal are unlikely to occur.

Therefore, by adopting a connection method using a receptacle for the signal side wiring, the connection between the positive electrode side wiring, the negative electrode side wiring, and the signal side wiring and each terminal of the terminal block is stable while suppressing the increase in size of the terminal block. It can be done efficiently and efficiently.

It is a side view of the electric work machine of 1st Embodiment. It is a partial perspective view of the electric work machine in the state which the battery pack is removed from the apparatus main body of 1st Embodiment. FIG. 3A is an explanatory view showing a partial configuration inside the device main body in a state where the battery pack is not attached, and FIG. 3B is an explanatory view showing a partial configuration inside the device main body in a state where the battery pack is attached. It is a figure. It is a perspective view of the battery pack of 1st Embodiment. It is a perspective view of the terminal block of 1st Embodiment. It is a perspective view of the terminal block of 1st Embodiment. It is an exploded perspective view of the terminal block of 1st Embodiment. FIG. 8A is a view showing a partial cross section of the xy plane in the terminal block of the first embodiment, and FIG. 8B is a cross section taken along the line AA in FIG. 8A. FIG. 9A is an explanatory view showing a state before the terminal block of the first embodiment is mounted on the half-split housing, and FIG. 9B is a state in which the terminal block of the first embodiment is mounted on the half-split housing. It is explanatory drawing which shows. It is a perspective view which shows the state which it is the terminal block of 1st Embodiment, and each lead wire is connected. It is sectional drawing BB in FIG. 8A. It is explanatory drawing which shows the arrangement relation of the terminal block and the control unit of 1st Embodiment. FIG. 13A is an explanatory view showing another example of the half-split housing, and FIG. 13B is an explanatory view showing a state in which the terminal block of the first embodiment is mounted on the half-split housing of FIG. 13A. 14A is an explanatory view showing still another example of the half-split housing, and FIG. 14B is an explanatory view showing a state in which the terminal block of the first embodiment is mounted on the half-split housing of FIG. 14A. It is a perspective view which shows the terminal block in the state which the positive electrode lead wire and the negative electrode lead wire are connected in the 2nd Embodiment. It is explanatory drawing which shows the arrangement relation of the terminal block and the control unit of 2nd Embodiment. It is explanatory drawing which shows the other configuration example of a terminal block.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. First Embodiment]
(1-1) Configuration of Electric Work Machine As shown in FIGS. 1 to 3, the electric work machine 1 of the present embodiment is a driver capable of drilling a hole in a work material and tightening a screw. It is configured as a drill. As shown in FIG. 1, the electric work machine 1 includes a device main body 2 and a battery pack 3. In the electric work machine 1, the battery pack 3 can be attached to and detached from the device main body 2. In the electric work machine 1, various electric loads in the device main body 2 are configured to be able to operate by receiving electric power from the battery pack 3 when the battery pack 3 is mounted on the device main body 2.

The device main body 2 includes a main body housing 4, a trigger operation unit 13, and a chuck unit 14. The main body housing 4 has two half-split housings 11 and 12 divided into left and right halves, and the half-split housings 11 and 12 are assembled so as to face each other. FIG. 1 shows the right half-split housing 11 of the half-split housings 11 and 12, and the left half-split housing 12 is located just behind the right half-split housing 11 in FIG. Note that FIG. 2 shows a part of the half-split housings 11 and 12, and FIG. 3 shows a part of the left half-split housing 12 of the half-split housings 11 and 12.

The main body housing 4 is formed in a hollow shape as a whole, and mainly includes two parts, a motor accommodating portion 5 and a grip portion 6. The motor accommodating portion 5 has a substantially cylindrical shape, and the motor M, which is one of the electric loads, is accommodated therein. A deceleration mechanism for decelerating the rotation of the motor M and transmitting it to the chuck portion 14 is provided in front of the motor M inside the motor accommodating portion 5. The motor M of this embodiment is, for example, a brushless motor. However, the motor M may be a motor other than the brushless motor.

The chuck portion 14 is configured so that various tip work tools such as a driver bit and a drill bit can be attached to the tip. When the motor M rotates, the rotation is transmitted to the chuck portion 14 via the reduction mechanism, whereby the tip work tool rotates together with the chuck portion 14. A virtual straight line including the axis of rotation of the motor M and parallel to the axis is defined as the motor axis 56.

The grip portion 6 is a portion gripped by the user when the electric work machine 1 is used, and extends downward from the substantially central portion in the motor axis direction of the motor accommodating portion 5 along the grip portion axis 57. It is installed. That is, the grip portion 6 is formed so as to extend from the motor accommodating portion 5 in the axial direction with the grip portion axis 57 as a substantially central axis.

The grip portion 6 is provided with a trigger operation portion 13 for the user to operate the grip portion 6 with a finger while gripping the grip portion 6.
At the lower end of the grip portion 6, a battery mounting portion 7 for mounting the battery pack 3 is provided. The battery pack 3 is configured to be removable from the battery mounting portion 7. FIG. 2 shows a state in which the battery pack 3 is removed from the battery mounting portion 7. From the state shown in FIG. 2, the battery pack 3 is mounted on the battery mounting portion 7 by sliding the battery pack 3 from the front to the rear of the device main body 2 with respect to the battery mounting portion 7, that is, to the left in FIG. be able to. FIG. 1 shows a state in which the battery pack 3 is mounted on the battery mounting portion 7.

The trigger operation unit 13 is operated by the user when rotating the motor M. When the user pulls the trigger operation unit 13, the motor M is driven, whereby the tip work tool is rotationally driven.

The terminal block 15 has a positive electrode connection terminal 21, a negative electrode connection terminal 22, and a signal connection terminal 23, as will be described later with reference to FIG. 7. In FIG. 2, the positive electrode side connection plate portion 21a which is a part of the positive electrode connection terminal 21, the negative electrode side connection plate portion 22a which is a part of the negative electrode connection terminal 22, and the signal side which is a part of the signal connection terminal 23 are shown. The connection plate portion 23a is shown in the figure. Further, FIG. 3A shows a negative electrode side connecting plate portion 22a.

The positive electrode side connecting plate portion 21a and the negative electrode side connecting plate portion 22a are both rectangular plate-shaped metal members. FIG. 2 illustrates a state in which the long sides of the positive electrode side connecting plate portion 21a and the negative electrode side connecting plate portion 22a extend in the substantially left-right direction of the paper surface of FIG.

Here, the direction of the xyz3 axis is defined with reference to each connection terminal 21, 22, 23 of the terminal block 15. As shown in FIG. 2, the axis in the substantially left-right direction in FIG. 2, that is, the long side direction of the positive electrode side connecting plate portion 21a and the negative electrode side connecting plate portion 22a is defined as the x-axis. Further, the axis in the direction in which the plate surface of the positive electrode side connecting plate portion 21a and the plate surface of the negative electrode side connecting plate portion 22a face each other is defined as the y-axis. Then, the axis perpendicular to the x-axis and the y-axis, that is, the axis in the short side direction of the positive electrode side connection plate portion 21a and the negative electrode side connection plate portion 22a, is the direction of the xyz3 axis shown in other drawings than FIG. Also, as in FIG. 2, the defined direction is based on the terminal block 15.

In FIG. 1, the grip portion axis 57 is parallel to the z-axis, but the motor axis 56 is not strictly parallel to the x-axis direction and forms a slight angle with respect to the x-axis direction. However, the relationship between the motor axis 56 and the grip portion axis 57 may be appropriately set, and for example, both may be in a vertical relationship.

As shown in FIG. 3A, the control unit 70 is mounted in the main body housing 4 above the terminal block 15, that is, on the upper side in the z-axis direction (in other words, the motor accommodating portion 5 side) when viewed from the terminal block 15. There is. The control unit 70 is operated by electric power supplied from the battery pack 3 via the terminal block 15 to control the operation of each part in the device main body 2 including the operation of the motor M. When the trigger operation unit 13 is pulled by the user, the control unit 70 rotates the motor M by energizing the motor M.

The control unit 70 has a substantially rectangular parallelepiped shape as a whole. Of the side surfaces of the control unit 70, the lower surface 70a, which is the lower side surface in the z-axis direction, is parallel to the upper surface surface 15a of the terminal block, which is the upper side surface in the z-axis direction of each side surface of the terminal block 15. Close to each other. That is, most of the region of the terminal block upper surface 15a of the terminal block 15 faces the lower surface 70a of the control unit 70.

However, the entire surface of the terminal block upper surface 15a does not face the lower surface 70a of the control unit 70, and in the present embodiment, at least a part of the terminal block upper surface 15a on the rear end side in the x-axis direction is the control unit. It does not face the lower surface 70a of 70. A plurality of lead wires 71, 72, 73 extend from the region that does not face the lower surface 70a, as will be described later with reference to FIGS. 12A and 12B.

In FIGS. 3A and 3B, 70b is the upper surface of each side surface of the control unit 70 on the upper side in the z-axis direction, and 70c is the upper surface of each side surface of the control unit 70 on the rear end side in the x-axis direction. It is the rear end surface which is the side surface. Further, FIG. 3A shows a state in which the battery pack 3 is removed from the battery mounting portion 7 of the main body housing 4, and FIG. 3B shows a state in which the battery pack 3 is mounted in the battery mounting portion 7 of the main body housing 4. Shown.

Next, the configuration of the battery pack 3 will be described with reference to FIG. In the direction of each axis of xyz shown in FIG. 4, it is assumed that the battery pack 3 is mounted on the device main body 2 and the connection plate portions 21a, 22a, 23a of the terminal block 15 are inserted into the battery pack 3. In the above-mentioned specified direction, the terminal block 15 is used as a reference.

As shown in FIG. 4, the battery pack 3 includes a main body portion 202 and a cover portion 201. The cover portion 201 is fixed to the main body portion 202 by a predetermined fixing means. In this embodiment, for example, it is screwed and fixed by a plurality of screws. When the fixed state by the fixing means is released, the cover portion 201 can be removed from the main body portion 202.

A battery and a control board are provided inside the battery pack 3. The battery of the present embodiment is, for example, a secondary battery that can be repeatedly charged and discharged, and more specifically, for example, a lithium ion secondary battery. However, the battery may be a secondary battery other than the lithium ion secondary battery, or may be a primary battery.

Various circuits for controlling the charging and discharging of the battery are formed on the control board. Further, the control board is provided with a positive electrode terminal 216, a negative electrode terminal 217, and a signal terminal 218. The positive electrode terminal 216 is a terminal connected to the positive electrode of the battery, and the negative electrode terminal 217 is a terminal connected to the negative electrode of the battery. The signal terminal 218 is a terminal for transmitting and receiving a signal between the control board in the battery pack 3 and the control unit 70 in the device main body 2. The signal for transmission to the device main body 2 generated by the control board is output from the signal terminal 218 to the device main body 2. The signal for transmission to the battery pack 3 generated by the device main body 2 is input from the signal terminal 218.

The positive electrode terminal 216, the negative electrode terminal 217, and the signal terminal 218 all have two contacts provided so as to face each other in the y-axis direction. When the battery pack 3 is attached to the device main body 2, the corresponding connection plate portion of the terminal block 15 is inserted between these two contacts. When the connection plate portion is inserted, each contact is in contact with both sides of the connection plate portion, whereby the connection plate portion and each contact are also electrically connected.

As shown in FIG. 4, the cover portion 201 is formed with slide guide portions 205 on both side surfaces in the y-axis direction at the upper portion thereof. Each slide guide portion 205 is formed over a certain length along the x-axis direction. The battery mounting portion 7 of the device main body 2 is formed with an insertion groove (not shown) having a constant length for inserting each slide guide portion 205 along the x-axis direction.

Further, the cover portion 201 is provided with an operation portion 203 and a hook portion 204. The operation portion 203 and the hook portion 204 are integrally formed, and are urged upward in the z-axis direction (upward in FIG. 4) by an elastic member (for example, a spring) (not shown). The operation unit 203 is a member that is pushed and operated by the user. When the user pushes the operation unit 203 downward in the z-axis direction with respect to the battery pack 3 in the state shown in FIG. 4, the hook unit 204 also moves downward in the z-axis direction.

Further, the cover portion 201 is formed with a positive electrode insertion groove 211, a negative electrode insertion groove 212, and a signal insertion groove 213, respectively, along the x-axis direction.
The positive electrode insertion groove 211 is a groove for inserting the positive electrode side connection plate portion 21a of the terminal block 15, and the negative electrode insertion groove 212 is a groove for inserting the negative electrode side connection plate portion 22a of the terminal block 15. The signal insertion groove 213 is a groove for inserting the signal side connection plate portion 23a of the terminal block 15.

Both walls in the y-axis direction in the positive electrode insertion groove 211 are open, and a part of the positive electrode terminal 216 is exposed from the opening. Also in the negative electrode insertion groove 212, both walls in the y-axis direction in the groove are open, and a part of the negative electrode terminal 217 is exposed from the opening portion. Also in the signal insertion groove 213, both walls in the y-axis direction in the groove are open, and a part of the signal terminal 218 is exposed from the opening portion.

When the battery pack 3 configured in this way is mounted on the device main body 2, each slide guide section 205 is moved to the battery mounting section while moving the battery pack 3 with respect to the battery mounting section 7 of the device body 2 in the x-axis direction. It is performed by inserting into each insertion groove of 7. Specifically, when the battery pack 3 is mounted from the state shown in FIG. 2, both positions are aligned so that the slide guide portions 205 of the battery pack 3 enter the insertion grooves of the battery mounting portion 7. , The battery pack 3 is slid in the x-axis direction. Then, each slide guide portion 205 of the battery pack 3 is inserted into each insertion groove of the battery mounting portion 7. Then, when the insertion proceeds to the predetermined mounting position, the insertion is stopped, the hook portion 204 of the battery pack 3 fits into the locking groove of the battery mounting portion 7, and the mounting is completed.

In the process of mounting the battery pack 3 on the device main body 2, the connection plate portions 21a, 22a, 23a of the terminal block 15 respectively have the corresponding insertion grooves 211, 212, 213 in the battery pack 3 with respect to FIG. It is inserted in the x-axis direction from left to right in. When the mounting is completed, most of the connection plate portions 21a, 22a, and 23a are inserted into the corresponding insertion grooves 211, 212, and 213, and the connection plate portions 21a are all inserted. , 22a, 23a are all connected to the corresponding terminals 216, 217, 218 on the battery pack 3 side.

When the battery pack 3 is removed from the device main body 2, the operation unit 203 of the battery pack 3 is pushed to disengage the hook portion 204 from the battery mounting portion 7, and the battery pack 3 is mounted. It can be removed by sliding it in the opposite direction.

(1-2) Configuration of Terminal Block The configuration of the terminal block 15 will be described in more detail with reference to FIGS. 5, 6, 7, 8A, 8B, 10 and 11. 10 and 11 show a state in which the lead wires 71, 72, and 73 are connected to the terminal block 15.

As shown in FIG. 7, the terminal block 15 includes a terminal holding member 16, a positive electrode connection terminal 21, a negative electrode connection terminal 22, and a signal connection terminal 23. Each of these connection terminals 21, 22, and 23 is a metal conductor.

The positive electrode connection terminal 21 is a terminal that is connected to the positive electrode terminal 216 of the battery pack 3 when the battery pack 3 is mounted on the battery mounting portion 7. The positive electrode connection terminal 21 has a positive electrode side connection plate portion 21a, a positive electrode side connection portion 21b, and a positive electrode side wiring contact portion 21c, and these are integrally formed. Note that FIGS. 5, 6, 7, and 8A show the positive electrode side connecting plate portion 21a. Further, in FIGS. 7 and 8A, the positive electrode side connecting portion 21b is shown. Further, in FIGS. 7, 8A and 8B, the positive electrode side wiring contact portion 21c is shown.

The positive electrode side connecting plate portion 21a is a rectangular plate-shaped member with which the positive electrode terminals 216 of the battery pack 3 come into contact when the battery pack 3 is mounted on the battery mounting portion 7.
As shown in FIGS. 7 and 8A, the positive electrode side connecting portion 21b extends from the short side of one of the two short side sides in the x-axis direction of the positive electrode side connecting plate portion 21a. Further, a plate-shaped positive electrode side wiring contact portion 21c extends from the end portion of the positive electrode side connecting portion 21b. A positive electrode lead wire 71 is connected to the positive electrode side wiring contact portion 21c as described later. The positive electrode lead wire 71 is an electrical wiring for electrically connecting the positive electrode terminal 216 of the battery pack 3 and the control unit 70.

The negative electrode connection terminal 22 is a terminal that is connected to the negative electrode terminal 217 of the battery pack 3 when the battery pack 3 is mounted on the battery mounting portion 7. The negative electrode connection terminal 22 has a negative electrode side connection plate portion 22a, a negative electrode side connection portion 22b, and a negative electrode side wiring contact portion 22c, and these are integrally formed. Note that FIGS. 6 and 7 show the negative electrode side connecting plate portion 22a. Further, in FIGS. 7 and 11, the negative electrode side connecting portion 22b is shown. Further, FIG. 7 shows a negative electrode side wiring contact portion 22c.

The negative electrode side connecting plate portion 22a is a rectangular plate-shaped member with which the negative electrode terminal 217 of the battery pack 3 comes into contact when the battery pack 3 is mounted on the battery mounting portion 7.
As shown in FIG. 7, the negative electrode side connecting portion 22b extends from the short side of one of the two short side sides in the x-axis direction of the negative electrode side connecting plate portion 22a. Further, a plate-shaped negative electrode side wiring contact portion 22c extends from the end portion of the negative electrode side connecting portion 22b. A negative electrode lead wire 72 is connected to the negative electrode side wiring contact portion 22c as described later. The negative electrode lead wire 72 is an electrical wiring for electrically connecting the negative electrode terminal 217 of the battery pack 3 and the control unit 70.

The signal connection terminal 23 is a terminal that is connected to the signal terminal 218 of the battery pack 3 when the battery pack 3 is mounted on the battery mounting portion 7. The signal connection terminal 23 has a signal side connection plate portion 23a, a signal side connection portion 23b, and a signal side wiring connection portion 23c, and these are integrally formed. Note that FIGS. 6 and 7 show the signal side connection plate portion 23a. Further, in FIGS. 7, 8A and 8B, the signal side connecting portion 23b is shown. Further, in FIGS. 5, 7 and 8A, the signal side wiring connection portion 23c is shown.

The signal side connection plate portion 23a is a plate-shaped member with which the signal terminal 218 of the battery pack 3 comes into contact when the battery pack 3 is mounted on the battery mounting portion 7.
As shown in FIGS. 7 and 8A, the signal side connecting portion 23b extends from the signal side connecting plate portion 23a. Further, the signal side wiring connection portion 23c extends from the end portion of the signal side connection portion 23b. A signal lead wire 73 is connected to the signal side wiring connection portion 23c as described later.

The positive electrode connection terminal 21, the negative electrode connection terminal 22, and the signal connection terminal 23 are held by the terminal holding member 16. The terminal holding member 16 is integrally formed of an insulating member containing resin as a whole. The terminal holding member 16 has an intermediate holding portion 27. In the intermediate holding portion 27, the connecting portions 21b, 22b, 23b at the connection terminals 21 to 23 are mainly held. The positive electrode side connection plate portion 21a, the negative electrode side connection plate portion 22a, and the signal side connection plate portion 23a are arranged in the connection plate arrangement region 20 of the terminal holding member 16.

Further, as shown in FIGS. 5 to 7, first rib 51, second rib 52, third rib 53, and fourth rib 54 are formed on the outer four sides of the terminal holding member 16. Each of these ribs 51, 52, 53, 54 is formed to position and fix the terminal block 15 to the main body housing 4. At the lower end of the grip portion 6 in the main body housing 4, engagement grooves for engaging the ribs 51, 52, 53, 54 of the terminal block 15 are formed, and the ribs 51, 52, 53, 54 are formed. By engaging with the corresponding engagement grooves, the terminal block 15 is positioned and fixed to the main body housing 4.

Specifically, as shown in FIG. 9A, the left half housing 12 of the two half housings 11 and 12 constituting the main body housing 4 has a first engaging groove 61 and a second engaging groove 62. And the third engaging groove 63 are formed. Then, the first rib 51 of the terminal block 15 is engaged with the first engaging groove 61, the second rib 52 of the terminal block 15 is engaged with the second engaging groove 62, and the terminal is engaged with the third engaging groove 63. By engaging the fourth rib 54 of the base 15, the terminal block 15 is positioned and fixed to the half housing 12 as shown in FIG. 9B.

Although not shown, in the right half housing 11, the engaging groove with which the second rib 52 is engaged, the engaging groove with which the third rib 53 is engaged, and the fourth rib 54 are also included. Engagement grooves are formed to be engaged, and ribs corresponding to each of these engagement grooves are engaged with each other. As a result, the terminal block 15 is positioned and fixed to the half housings 11 and 12, that is, to the main body housing 4.

Further, the terminal block 15 includes a positive electrode side wiring fixing portion 30 and a negative electrode side wiring fixing portion 40. The positive electrode side wiring fixing portion 30 is arranged in the positive electrode side arrangement region 17 of the terminal holding member 16, and the negative electrode side wiring fixing portion 40 is arranged in the negative electrode side arrangement region 18 of the terminal holding member 16.

As shown in FIGS. 5 and 7, the positive electrode side wiring fixing portion 30 and the negative electrode side wiring fixing portion 40 are connected to each other by the connecting plate 25, so that they are configured as one component as a whole.

As shown in FIG. 7, in the terminal holding member 16, engaging claws 17a and 18a are provided in the positive electrode side arrangement region 17 and the negative electrode side arrangement region 18, respectively. On the other hand, the connecting plate 25 connecting the wiring fixing portions 30 and 40 is formed with two engaging holes 26 for engaging the engaging claws 17a and 18a. Insert the wiring fixing portions 30 and 40 into the corresponding arrangement areas 17 and 18 in the terminal holding member 16 in the x-axis direction until the engaging claws 17a and 18a engage with the engaging holes 26 of the connecting plate 25. As the insertion proceeds, the arrangement of the wiring fixing portions 30 and 40 with respect to the arrangement areas 17 and 18 is completed, and the state is as shown in FIG.

The positive electrode side wiring fixing portion 30 has a positive electrode side insertion member 31, a positive electrode side screw 34, and a positive electrode side pressing member 36.
The positive electrode side insertion member 31 is a hollow member having a substantially rectangular parallelepiped shape as a whole, although it does not have a part of side surfaces. The positive electrode side insertion member 31 has a positive electrode side insertion space 32 which is a hollow region. In the positive electrode side insertion space 32, the positive electrode side wiring contact portion 21c of the positive electrode connection terminal 21 is arranged, and the positive electrode lead wire 71 is inserted. The positive electrode side wiring contact portion 21c is positioned and fixed to the terminal holding member 16 by being inserted into the positive electrode fixing groove 16a formed in the positive electrode side arrangement region 17 of the terminal holding member 16.

A positive electrode side insertion port 35, which is a hole for inserting the positive electrode lead wire 71 into the positive electrode side insertion space 32, is formed on the side surface of the positive electrode side insertion member 31 on the upper side in the z-axis direction. The positive electrode lead wire 71 is inserted from the positive electrode side insertion port 35 and inserted into the positive electrode side insertion space 32.

More specifically, the positive electrode side insertion port 35 has a tapered portion 35b and a lead wire holding portion 35a, as shown in FIG. 8B. The tapered portion 35b is such that the opening area gradually decreases toward the positive side insertion space 32, a portion that the inner wall is tapered. The lead wire holding portion 35a is a tubular portion of the tapered portion 35b that is continuously provided from the end portion on the positive electrode side insertion space 32 side toward the positive electrode side insertion space 32. The positive electrode lead wire 71 is inserted into the tapered portion 35b and is inserted into the positive electrode side insertion space 32 via the lead wire holding portion 35a.

A screw insertion port 33 is formed on the side surface of the positive electrode side insertion member 31 on the rear side in the x-axis direction. The positive electrode side screw 34 is inserted into the screw insertion port 33 from the rear side in the x-axis direction. As a result, the screw shaft of the positive electrode side screw 34 is located in the positive electrode side insertion space 32. Although the screw shaft of the positive electrode side screw 34 can be inserted into the screw insertion port 33, the screw head of the positive electrode side screw 34 is formed so as not to be inserted into the positive electrode side insertion space 32.

The screw insertion port 33 may be formed so that a screw groove is formed in accordance with the positive electrode side screw 34 and the positive electrode side screw 34 is screwed into the screw groove. However, in the present embodiment, the screw is formed. There is no groove and it is formed so that the positive electrode side screw 34 can be simply inserted. The same applies to the screw insertion port 43 of the negative electrode side wiring fixing portion 40, which will be described later.

The positive electrode side pressing member 36 is a substantially square plate-shaped member, and is arranged in the positive electrode side insertion space 32. The material of the positive electrode side pressing member 36 is a conductive metal in the present embodiment, but this is only an example.

As shown in FIGS. 8A and 8B, the positive electrode side pressing member 36 is arranged so that the plate surface faces the plate surface of the positive electrode side wiring contact portion 21c. A screw hole is formed in a substantially central portion of the plate surface of the positive electrode side pressing member 36 so as to penetrate the positive electrode side pressing member 36 in the x-axis direction. The positive electrode side screw 34 inserted from the screw insertion port 33 is screwed into the screw hole of the positive electrode side pressing member 36.

The cross-sectional shape of the yz surface of the positive electrode side insertion space 32 is substantially square like the plate surface shape of the positive electrode side pressing member 36, and the cross-sectional area is slightly larger than the plate surface area of the positive electrode side pressing member 36. .. Therefore, the rotation of the positive electrode side pressing member 36 with the screw hole axis as the rotation axis is restricted in the positive electrode side insertion space 32. That is, the rotation of the positive electrode side pressing member 36 with the yz surface as the rotating surface is restricted by the inner wall of the positive electrode side inserting member 31.

On the other hand, the positive electrode side pressing member 36 is allowed to move in the x-axis direction in the positive electrode side insertion space 32. Therefore, when the positive electrode side screw 34 inserted from the screw insertion port 33 is screwed into the positive electrode side pressing member 36 and the positive electrode side screw 34 is screwed in, the positive electrode side screw 34 follows the screwing. The side pressing member 36 moves to the rear side in the x-axis direction. That is, as the screwing of the positive electrode side screw 34 is advanced, the positive electrode side pressing member 36 approaches the positive electrode side wiring contact portion 21c arranged on the rearmost end side in the x-axis direction in the positive electrode side insertion space 32. If no object exists between the positive electrode side pressing member 36 and the positive electrode side wiring contact portion 21c, the positive electrode side pressing member 36 is brought into the positive electrode side wiring contact portion 21c by advancing the screwing of the positive electrode side screw 34. Can be brought into contact.

However, in the present embodiment, the positive electrode lead wire 71 inserted from the positive electrode side insertion port 35 is inserted between the positive electrode side pressing member 36 and the positive electrode side wiring contact portion 21c in the positive electrode side insertion space 32. Therefore, by advancing the screwing of the positive electrode side screw 34 and bringing the positive electrode side pressing member 36 closer to the positive electrode side wiring contact portion 21c, the positive electrode lead wire is connected between the positive electrode side pressing member 36 and the positive electrode side wiring contact portion 21c. 71 is sandwiched. As the screwing is further advanced, the tightening force of the positive electrode side screw 34 generated by the screwing, that is, to the rear side in the x-axis direction acting on the positive electrode lead wire 71 via the positive electrode side pressing member 36 due to the screwing. The positive electrode lead wire 71 is pressed against the positive electrode side wiring contact portion 21c by the tightening force, and is fixed in a state where both are in contact with each other. As a result, the positive electrode lead wire 71 and the positive electrode side wiring contact portion 21c are electrically connected, and the contact state is maintained by a large contact pressure so that the two are not mechanically separated from each other.

The negative electrode side wiring fixing portion 40 also has basically the same configuration as the positive electrode side wiring fixing portion 30, and both have a symmetrical structure. That is, the negative electrode side wiring fixing portion 40 has a negative electrode side insertion member 41, a negative electrode side screw 44, and a negative electrode side pressing member 46.

The negative electrode side insertion member 41 is a hollow member having a substantially rectangular parallelepiped shape as a whole, although it does not have a part of a side surface. The negative electrode side insertion member 41 has a negative electrode side insertion space 42 which is a hollow region. The negative electrode side wiring contact portion 22c of the negative electrode connection terminal 22 is arranged in the negative electrode side insertion space 42, and the negative electrode lead wire 72 is inserted. The negative electrode side wiring contact portion 22c is positioned and fixed to the terminal holding member 16 by being inserted into the negative electrode fixing groove 16b formed in the negative electrode side arrangement region 18 of the terminal holding member 16.

A negative electrode side insertion port 45, which is a hole for inserting the negative electrode lead wire 72 into the negative electrode side insertion space 42, is formed on the side surface of the negative electrode side insertion member 41 on the upper side in the z-axis direction. The negative electrode lead wire 72 is inserted from the negative electrode side insertion port 45 and inserted into the negative electrode side insertion space 42.

More specifically, the negative electrode side insertion port 45 has a tapered portion 45b and a lead wire holding portion 45a, as shown in FIG. 8A. Since the tapered portion 45b and the lead wire holding portion 45a have basically the same configuration as the tapered portion 35b and the lead wire holding portion 35a of the positive electrode side insertion port 35 shown in FIG. 8B, detailed description thereof will be omitted here.

A screw insertion port 43 is formed on the side surface of the negative electrode side insertion member 41 on the rear side in the x-axis direction. The negative electrode side screw 44 is inserted into the screw insertion port 43 from the rear side in the x-axis direction. As a result, the screw shaft of the negative electrode side screw 44 is located in the negative electrode side insertion space 42. The screw insertion port 43 is formed so that the screw shaft of the negative electrode side screw 44 can be inserted, but the screw head of the negative electrode side screw 44 is not inserted into the negative electrode side insertion space 42.

The negative electrode side pressing member 46 is a substantially square plate-shaped member, and is arranged in the negative electrode side insertion space 42. The material of the negative electrode side pressing member 46 is a conductive metal in this embodiment, but this is only an example.

Similar to the positional relationship between the positive electrode side pressing member 36 and the positive electrode side wiring contact portion 21c, the negative electrode side pressing member 46 is arranged so that the plate surface faces the plate surface of the negative electrode side wiring contact portion 22c. A screw hole is formed in a substantially central portion of the plate surface of the negative electrode side pressing member 46 so as to penetrate the negative electrode side pressing member 46 in the x-axis direction. The negative electrode side screw 44 inserted from the screw insertion port 43 is screwed into the screw hole of the negative electrode side pressing member 46.

The cross-sectional shape of the yz surface of the negative electrode side insertion space 42 is substantially square like the plate surface shape of the negative electrode side pressing member 46, and the cross-sectional area is slightly larger than the plate surface area of the negative electrode side pressing member 46. .. Therefore, the rotation of the negative electrode side pressing member 46 with the axis of the screw hole as the rotation axis is restricted in the negative electrode side insertion space 42. That is, the rotation of the negative electrode side pressing member 46 with the yz surface as the rotating surface is restricted by the inner wall of the negative electrode side inserting member 41.

On the other hand, the negative electrode side pressing member 46 is allowed to move in the x-axis direction in the negative electrode side insertion space 42. Therefore, when the negative electrode side screw 44 inserted from the screw insertion port 43 is screwed into the negative electrode side pressing member 46 and the negative electrode side screw 44 is screwed in, the negative electrode side screw 44 follows the screwing. The side pressing member 46 moves to the rear side in the x-axis direction. That is, as the negative electrode side screw 44 is screwed in, the negative electrode side pressing member 46 approaches the negative electrode side wiring contact portion 22c arranged on the rearmost end side in the x-axis direction in the negative electrode side insertion space 42. If no object exists between the negative electrode side pressing member 46 and the negative electrode side wiring contact portion 22c, the negative electrode side pressing member 46 is brought into the negative electrode side wiring contact portion 22c by advancing the screwing of the negative electrode side screw 44. Can be brought into contact.

However, in the present embodiment, the negative electrode lead wire 72 inserted from the negative electrode side insertion port 45 is inserted between the negative electrode side pressing member 46 and the negative electrode side wiring contact portion 22c in the negative electrode side insertion space 42. Therefore, by advancing the screwing of the negative electrode side screw 44 and bringing the negative electrode side pressing member 46 closer to the negative electrode side wiring contact portion 22c, the negative electrode lead wire is connected between the negative electrode side pressing member 46 and the negative electrode side wiring contact portion 22c. 72 is sandwiched. As the screwing is further advanced, the tightening force of the negative electrode side screw 44 generated by the screwing, that is, to the rear side in the x-axis direction acting on the negative electrode lead wire 72 via the negative electrode side pressing member 46 due to the screwing. The negative electrode lead wire 72 is pressed against the negative electrode side wiring contact portion 22c by the tightening force, and is fixed in a state where both are in contact with each other. As a result, the negative electrode lead wire 72 and the negative electrode side wiring contact portion 22c are electrically connected, and the contact state is maintained by a large contact pressure so that the two are not mechanically separated from each other.

In the terminal block 15, the signal side wiring connection portion 23c of the signal connection terminal 23 is arranged between the positive electrode side wiring fixing portion 30 and the negative electrode side wiring fixing portion 40 as shown in FIG. As shown in FIG. 7, the terminal holding member 16 is formed with a signal fixing groove 16c for positioning the signal side wiring connection portion 23c. By inserting the signal side wiring connection portion 23c into the signal fixing groove 16c, the signal side wiring connection portion 23c is positioned and fixed.

The signal receptacle 78 shown in FIGS. 10 and 11 is freely inserted and removed from the signal side wiring connection portion 23c. A signal lead wire 73 is connected to the signal receptacle 78. The signal lead wire 73 is an electrical wiring for electrically connecting the signal terminal 218 of the battery pack 3 and the control unit 70. The first end is connected to the control unit 70, and the second end is the signal receptacle. It is connected to 78. By fitting the signal receptacle 78 into the signal side wiring connection portion 23c of the signal connection terminal 23, the signal lead wire 73 is electrically connected to the signal connection terminal 23, whereby the control unit 70 and the battery pack 3 are connected. Is electrically connected to the negative electrode terminal 217 of the above via the signal lead wire 73 and the signal connection terminal 23.

With the above configuration, the lead wires 71, 72, and 73 are connected to each other on the terminal block 15 as shown in FIGS. 10 and 11. That is, the positive electrode lead wire 71 is inserted from the positive electrode side insertion port 35 and fixed in a state of being pressed against the positive electrode side wiring contact portion 21c by the positive electrode side wiring fixing portion 30. The negative electrode lead wire 72 is inserted from the negative electrode side insertion port 45, and is fixed in a state of being pressed against the negative electrode side wiring contact portion 22c by the negative electrode side wiring fixing portion 40. The contact of the negative electrode lead wire 72 with the negative electrode side wiring contact portion 22c means, more strictly speaking, the contact of the strands of the negative electrode lead wire 72, that is, the conductor portion, as shown in FIG. The same applies to the contact of the positive electrode lead wire 71 with the positive electrode side wiring contact portion 21c, and strictly speaking, it means the contact of the strands of the positive electrode lead wire 71.

The positive electrode side insertion port 35 and the negative electrode side insertion port 45 are formed on the same side surface of the terminal block 15, specifically, on the terminal block upper surface 15a. Further, the positive electrode side insertion port 35 and the negative electrode side insertion port 45 are formed in the terminal block 15 in an end region on the upper surface surface 15a of the terminal block where the control unit 70 does not face, as shown in FIGS. 12A and 12B. ..

That is, although the control unit 70 is arranged so as to face most of the region of the terminal block upper surface 15a of the terminal block 15 as a whole, the control unit 70 is located at the positive electrode side insertion port 35 and the negative electrode side insertion port 45. Are arranged so that they do not overlap and block them.

Then, as shown in FIGS. 10, 11, 12A and 12B, both the positive electrode lead wire 71 and the negative electrode lead wire 72 extend from the terminal block 15 in the z-axis direction, that is, in the same direction as the grip portion axis 57. It is laid so as to extend to. The signal lead wire 73 is also laid so as to extend in the same direction as the other lead wires 71 and 72.

The directions in which the lead wires 71, 72, and 73 extend from the terminal block 15 do not have to be exactly the same as the z-axis direction, that is, parallel to the z-axis direction. For example, the x, y, and z3 directions. Any component may be used as long as the component in the z-axis direction is the largest.

Then, each of the lead wires 71, 72, and 73 is connected to the control unit 70 as shown in FIGS. 12A and 12B.
(1-3) Effects of First Embodiment According to the first embodiment described above, the following effects (1a) to (1e) are exhibited.

(1a) The positive electrode lead wire 71 is pressed and fixed to the positive electrode side wiring contact portion 21c of the positive electrode connection terminal 21 by the tightening force of the positive electrode side screw 34 at the positive electrode side wiring fixing portion 30. Similarly, the negative electrode lead wire 72 is also pressed and fixed to the negative electrode side wiring contact portion 22c of the negative electrode connection terminal 22 by the tightening force of the negative electrode side screw 44 at the negative electrode side wiring fixing portion 40. Therefore, regardless of the vibration generated when the electric work machine 1 is used or handled, the electrical connection state between the positive electrode connection terminal 21 and the positive electrode lead wire 71, and the electrical connection between the negative electrode connection terminal 22 and the negative electrode lead wire 72 Both connection states can be maintained stably.

(1b) In particular, in the present embodiment, the lead wire is sandwiched between the pressing member and the wiring contact portion via the pressing member, instead of directly contacting the lead wire with the screw to press-contact the lead wire. The lead wire is pressed against each other. Therefore, both the positive electrode lead wire 71 and the negative electrode lead wire 72 can maintain a more stable electrical connection state with the respective connection terminals 21 and 22 to be connected in the terminal block 15.

(1c) The positive electrode side insertion port 35 and the negative electrode side insertion port 45 are formed on the terminal block upper surface 15a in the terminal block 15, that is, on the same side surface of each side surface of the terminal block 15. Then, the positive electrode lead wire 71 and the negative electrode lead wire 72 are inserted into the insertion ports 35 and 45 formed on the same side surface, respectively, and the lead wires 71 and 72 both extend in the same direction from the terminal block 15. It will be laid.

In particular, in the present embodiment, the control unit 70 is arranged at a position separated from the terminal block 15 in the direction of the grip portion axis 57, more specifically, at a position facing the terminal block upper surface 15a. Then, the lead wires 71 and 72 are laid so as to extend from the terminal block 15 in the direction in which the control unit 70 is arranged. Therefore, the lead wires 71 and 72 can be laid stably and efficiently.

(1d) Both the positive electrode side insertion port 35 and the negative electrode side insertion port 45 are provided with a tapered portion and a lead wire holding portion, as shown in FIGS. 8A and 8B. Therefore, the lead wire to be inserted can be easily inserted into each of the insertion ports 35 and 45 via the tapered portion. Moreover, the lead wire inserted through the tapered portion can be appropriately held by the lead wire holding portion. Since the inserted lead wire can be held by the lead wire holding portion, the stability of the electrical connection state between the lead wire and the connection terminal can be further improved.

(1e) A first rib 51, a second rib 52, a third rib 53, and a fourth rib 54 are formed on the four outer peripheral sides of the terminal block 15, respectively. Then, each of these ribs engages with each engaging groove of the main body housing 4, so that the terminal block 15 is positioned and fixed with respect to the main body housing 4. Therefore, the terminal block 15 can be satisfactorily fixed to the main body housing 4 with a simple configuration.

Further, by forming ribs on all four outer peripheral sides of the terminal block 15, the versatility of the terminal block 15 is enhanced. That is, the terminal block 15 can be used even for a half-split housing having a shape different from the shape of the half-split housing 12 of the first embodiment shown in FIGS. 9A and 9B.

For example, the half-split housing 90 shown in FIG. 13A is different from the shape of the half-split housing 12 of the first embodiment shown in FIG. 9A, but the first rib 51, the third rib 53, and the fourth rib in the terminal block 15 are different. Three engaging grooves are formed to match the three ribs of 54. Specifically, the half-split housing 90 shown in FIG. 13A has a first engaging groove 91 for engaging the fourth rib 54, a second engaging groove 92 for engaging the first rib 51, and a second engaging groove 92. A third engaging groove 93 for engaging the third rib 53 is formed. Therefore, as shown in FIG. 13B, the terminal block 15 of the first embodiment can be positioned and fixed to the half-split housing 90 configured in this way.

Further, for example, the half-split housing 100 shown in FIG. 14A is also different from the shape of the half-split housing 12 of the first embodiment shown in FIG. 9A, but the first rib 51, the second rib 52, and the third rib 52 in the terminal block 15 are different. Three engaging grooves are formed in accordance with the three ribs of the rib 53. Specifically, the half-split housing 100 shown in FIG. 14A has a first engaging groove 101 for engaging the second rib 52, a second engaging groove 102 for engaging the third rib 53, and A third engaging groove 103 for engaging the first rib 51 is formed. Therefore, as shown in FIG. 14B, the terminal block 15 of the first embodiment can be positioned and fixed to the half-split housing 100 configured in this way.

(1-4) Correspondence with the wording of the claims Here, the correspondence between the wording of the first embodiment and the wording of the claims will be described. The electric load in the device main body 2 including the control unit 70 and the motor M corresponds to the load unit.

The grip portion 6 corresponds to the grip portion. The positive electrode lead wire 71 corresponds to the positive electrode side wiring, the negative electrode lead wire 72 corresponds to the negative electrode side wiring, and the signal lead wire 73 corresponds to the signal side wiring. The positive electrode lead wire 71, the negative electrode lead wire 72, and the signal lead wire 73 are examples of a plurality of electrical wirings.

[2. Second Embodiment]
The terminal block 110 of the second embodiment will be described with reference to FIG. The difference between the terminal block 110 of the second embodiment shown in FIG. 15 and the terminal block 15 of the first embodiment is that the positive electrode lead wire 71 is selectively selected from a plurality of different directions with respect to the positive electrode side wiring fixing portion 30. Can be inserted into. The same applies to the negative electrode side wiring fixing portion 40, and in the second embodiment, the negative electrode lead wire 72 can be selectively inserted from any of a plurality of different directions.

Specifically, as an insertion port for inserting the positive electrode lead wire 71, as shown in FIG. 15, in addition to the positive electrode side insertion port 35, a positive electrode side side surface insertion port 116 is formed. The positive electrode side side surface insertion port 116 is formed on a side surface different from the terminal block upper surface 110a, which is the side surface on which the positive electrode side insertion port 35 is formed. Specifically, the positive electrode side side surface insertion port 116 is formed so as to penetrate the terminal holding member 111 in the y-axis direction. In the second embodiment, a part of the terminal holding member 111, including the positive electrode side side insertion port 116, adjacent to the positive electrode side wiring fixing portion 30, is a part of the components constituting the positive electrode side wiring fixing portion 30. Treat as.

Further, as an insertion port for inserting the negative electrode lead wire 72, as shown in FIG. 15, in addition to the negative electrode side insertion port 45, a negative electrode side side surface insertion port 117 is formed. The negative electrode side side insertion port 117 is a side surface different from the terminal block upper surface 110a on which the negative electrode side insertion port 45 is formed, and 180 degrees opposite to the side surface on which the positive electrode side side surface insertion port 116 is formed. It is formed on the side surface of. Further, the negative electrode side side surface insertion port 117 is formed so as to penetrate the terminal holding member 111 in the y-axis direction, like the positive electrode side side surface insertion port 116. In the second embodiment, a part of the terminal holding member 111, including the negative electrode side side insertion port 117, adjacent to the negative electrode side wiring fixing portion 40 is a part of the components constituting the negative electrode side wiring fixing portion 40. Treat as.

The positive electrode lead wire 71 can be inserted into either the positive electrode side insertion port 35 or the positive electrode side side surface insertion port 116, but in the present embodiment, it is inserted into the positive electrode side side surface insertion port 116 as an example. There is. The negative electrode lead wire 72 can also be inserted into either the negative electrode side insertion port 45 or the negative electrode side side surface insertion port 117, but in the present embodiment, it is inserted into the negative electrode side side surface insertion port 117 as an example. ing.

As described above, in the present embodiment, the positive electrode lead wire 71 and the negative electrode lead wire 72 are laid so as to extend in different directions from the insertion ports formed on the different side surfaces of the terminal block 110, respectively. More specifically, in the present embodiment, the positive electrode lead wire 71 and the negative electrode lead wire 72 are laid so as to extend 180 degrees from the terminal block 110 in opposite directions.

Further, with respect to the terminal block 110, the control unit 70 is arranged so as to completely cover the terminal block upper surface 110a of the terminal block 110, as shown in FIG. From such an arrangement, in the present embodiment, the lead wires 71 and 72 are inserted not from the terminal block upper surface 110a side but from the side surface not facing the control unit 70.

The positive electrode side side insertion port 116 may be configured to include a tapered portion and a lead wire holding portion, similarly to the positive electrode side insertion port 35. The same applies to the negative electrode side side surface insertion port 117.
As described above, the terminal block 110 of the present embodiment is formed with a plurality of insertion ports for inserting the positive electrode lead wire 71 and a plurality of insertion ports for inserting the negative electrode lead wire 72, and the plurality of insertion ports are formed. A lead wire can be inserted into either of them. Therefore, it is possible to provide a highly versatile terminal block 110.

[3. Other embodiments]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and can be implemented in various modifications.

(3-1) In the terminal block, the direction in which each lead wire is inserted, the number of insertion ports, the formation position of the insertion ports, and the like may be appropriately determined.
For example, as in the terminal block 125 shown in FIG. 17, the lead wires 71 and 72 may be inserted from the rear in the x-axis direction. In the terminal block 125 shown in FIG. 17, insertion ports for inserting the lead wires 71 and 72 are formed on the rear side surface in the x-axis direction. Therefore, the insertion sites of the positive electrode side screw and the negative electrode side screw are different from those of the terminal block 15 of the first embodiment.

That is, as shown in FIGS. 5 and 7, the terminal block 15 of the first embodiment has a configuration in which the positive electrode side screw 34 and the negative electrode side screw are inserted from the rear side surface of the terminal block 15 in the x-axis direction. It was. On the other hand, in the terminal block 125 shown in FIG. 17, each screw is inserted from a side surface perpendicular to the y-axis direction.

Specifically, in the terminal block 125 shown in FIG. 17, the negative side insertion member 131 included in the negative side wiring fixing portion 130 has a screw insertion port 133 formed on the side surface in the y-axis direction with respect to the screw insertion port 133. The negative side screw 134 is inserted. In the negative electrode side insertion space 132, both the negative electrode side wiring contact portion 22c and the negative electrode side pressing member 46 of the negative electrode connection terminal 22 are arranged so that the plate surface is parallel to the xz surface. Then, when the negative electrode side screw 134 is screwed into the negative electrode side pressing member 46, the negative electrode side pressing member 46 moves in the y-axis direction and approaches the negative electrode side wiring contact portion 22c.

The negative electrode lead wire 72 is inserted from the negative electrode side insertion port 135 formed on the side surface rearward in the x-axis direction. The negative electrode lead wire 72 is inserted between the negative electrode side wiring contact portion 22c and the negative electrode side pressing member 46 in the negative electrode side insertion space 132. Therefore, by screwing in the negative electrode side screw 134, the negative electrode lead wire 72 is sandwiched and fixed between the negative electrode side wiring contact portion 22c and the negative electrode side pressing member 46, as in the terminal block 15 of the first embodiment. be able to.

In the terminal block 125 of FIG. 17, the positive electrode side wiring fixing portion for inserting and fixing the positive electrode lead wire 71 also has basically the same configuration as the negative electrode side wiring fixing portion 130.
That is, in FIG. 17, both the positive electrode lead wire 71 and the negative electrode lead wire 72 are laid from the terminal block 125 so as to extend from the side surface rearward in the x-axis direction to the rearward in the x-axis direction. However, the control unit 70 is arranged at a position facing the upper surface of the terminal block with respect to the terminal block 125. Therefore, although the positive electrode lead wire 71 and the negative electrode lead wire 72 extend rearward in the x-axis direction from the terminal block 125, they are bent in the direction opposite to the extending direction and connected to the control unit 70. The upper surface of the terminal block facing the control unit 70 corresponds to a specific side surface.

Further, depending on the positional relationship between the motor and the terminal block, or the positional relationship between the two in the housing internal space of the electric work machine, the positive electrode lead wire and the negative electrode lead wire connected to the terminal block are moved from the terminal block to the motor. It may be laid so as to extend in the axial direction of the rotation axis of.

(3-2) Various modes can be considered as the specific configuration for pressing the positive electrode lead wire 71 against the positive electrode side wiring contact portion 21c in the positive electrode side wiring fixing portion. For example, the screw insertion slot formed in the positive electrode side insertion member may have a shape in which a screw groove is formed so that the positive positive side screw 34 is screwed into the screw insertion slot. Then, the tip of the positive electrode side screw 34 is brought into direct contact with the positive electrode lead wire 71 to press the positive electrode lead wire 71 in the screwing direction of the screw, and the positive electrode is pressed against the positive electrode side wiring contact portion 21c arranged in the pressing direction. The lead wire 71 may be pressed. That is, the positive electrode side pressing member 36 may not be used, and the tightening force due to the screwing of the positive electrode side screw 34 may be applied directly from the positive electrode side screw 34 to the positive electrode lead wire 71.

Further, when the positive electrode side pressing member is used, it is not the positive electrode side pressing member having the configuration in which the positive electrode side screw 34 is screwed as in the first embodiment, but for example, the tip of the positive electrode side screw 34 is in contact with the positive electrode side. A positive electrode side pressing member having a structure in which the screw 34 moves in the screwing direction may be used. In that case, the positive electrode side wiring contact portion 21c is positioned in the screwing direction of the positive electrode side screw 34 with respect to the positive electrode side pressing member, and the positive electrode side screw 34 is screwed in so that the positive electrode side pressing member is wired to the positive electrode side. It may be configured so as to approach the contact portion 21c. Then, by configuring the positive electrode lead wire 71 to be inserted between the positive electrode side wiring contact portion 21c and the positive electrode side pressing member, the positive electrode lead wire 71 can be pressed against the positive electrode side wiring contact portion 21c.

(3-3) It is not essential that the positive electrode side wiring fixing portion and the negative electrode side wiring fixing portion have a symmetrical structure. For example, the positive electrode side wiring fixing portion 30 of the first embodiment shown in FIG. 5 is adopted as the positive electrode side wiring fixing portion, and the negative electrode side wiring fixing portion 130 shown in FIG. 17 is adopted as the negative electrode side wiring fixing portion. You may.

(3-4) It is not essential that the lead wire insertion port has a tapered portion and a wiring holding portion. The lead wire insertion port may have at least a hole into which the lead wire can be inserted. Further, only a specific one or a plurality of the plurality of lead wire insertion ports may be configured to include a tapered portion and a wiring holding portion.

(3-5) In the above embodiment, the motor M and the control unit 70 are shown as the load unit, but these are examples of the load unit. There may be other load units that operate on the power supplied by the battery pack 3.

(3-6) In the above embodiment, a driver drill is shown as an electric work machine, but this is just an example. The present disclosure is applicable not only to driver drills but also to, for example, impact drivers, hammer drills, grinders, reciprocating saws, brush cutters, cleaners, and various other electric work machines with removable battery packs.

(3-7) A plurality of functions possessed by one component in the above embodiment may be realized by a plurality of components, or one function possessed by one component may be realized by a plurality of components. May be good. Further, a plurality of functions possessed by the plurality of components may be realized by one component, or one function realized by the plurality of components may be realized by one component. Further, a part of the configuration of the above embodiment may be omitted. In addition, at least a part of the configuration of the above embodiment may be added or replaced with the configuration of the other above embodiment. It should be noted that all aspects included in the technical idea specified from the wording described in the claims are embodiments of the present disclosure.

1 ... Electric work machine, 2 ... Equipment main body, 3 ... Battery pack, 4 ... Main body housing, 6 ... Grip part, 7 ... Battery mounting part, 11, 12 ... Half-split housing, 15, 110, 125 ... Terminal stand, 15a , 110a ... Terminal block upper surface, 16 ... Terminal holding member, 21 ... Positive electrode connection terminal, 21a ... Positive electrode side connection plate, 21b ... Positive electrode side connection, 21c ... Positive electrode side wiring contact, 22 ... Negative electrode connection terminal, 22a ... Negative electrode side connection plate, 22b ... Negative electrode side connection, 22c ... Negative electrode side wiring contact, 23 ... Signal connection terminal, 23a ... Signal side connection plate, 23b ... Signal side connection, 23c ... Signal side wiring connection, 30 ... Positive electrode side wiring fixing portion, 31 ... Positive electrode side insertion member, 32 ... Positive electrode side insertion space, 33, 43 ... Screw insertion port, 34 ... Positive electrode side screw, 35 ... Positive electrode side insertion port, 35a, 45a ... Lead wire holding Parts, 35b, 45b ... Tapered part, 36 ... Positive electrode side pressing member, 40 ... Negative electrode side wiring fixing part, 41 ... Negative electrode side insertion member, 42 ... Negative electrode side insertion space, 44 ... Negative electrode side screw, 45 ... Negative electrode side insertion port , 46 ... Negative electrode side pressing member, 51 ... 1st rib, 52 ... 2nd rib, 53 ... 3rd rib, 54 ... 4th rib, 56 ... Motor axis, 57 ... Grip axis, 70 ... Control unit, 71 ... Positive electrode lead wire, 72 ... Negative electrode lead wire, 73 ... Signal lead wire, 78 ... Signal receptacle, 116 ... Positive electrode side side surface insertion port 117 ... Negative electrode side side surface insertion port, M ... Motor.

Claims (13)

A mounting part that allows the battery pack to be attached and detached,
When the battery pack is mounted on the mounting portion, the load portion operated by the electric power supplied from the battery pack and the load portion
A terminal block that is connected to the battery pack when the battery pack is mounted on the mounting portion.
A plurality of electrical wirings for electrically connecting the terminal block and the load unit, and
With
The terminal block
A terminal that is connected to the positive electrode terminal of the battery pack when the battery pack is mounted on the mounting portion, and is for electrically connecting the terminal and the load portion of the plurality of electrical wirings. A positive electrode connection terminal having a positive electrode side wiring contact portion with which the positive electrode side wiring is contacted,
A terminal that is connected to the negative electrode terminal of the battery pack when the battery pack is mounted on the mounting portion, and is for electrically connecting the terminal and the load portion of the plurality of electrical wirings. A negative electrode connection terminal having a negative electrode side wiring contact portion with which the negative electrode side wiring is contacted,
It has a screw, and when the tightening force of the screw acts on the positive electrode side wiring in the direction of contacting the positive electrode side wiring contact portion, the tightening force causes the positive electrode side wiring to move to the positive electrode side wiring contact portion. The positive electrode side wiring fixing part fixed in the state of being pressure-welded to
The negative electrode side wiring has a screw, and the tightening force of the screw acts on the negative electrode side wiring in the direction of contacting the negative electrode side wiring contact portion, so that the negative electrode side wiring is caused by the negative electrode side wiring contact portion. The negative electrode side wiring fixing part fixed in the state of being pressure-welded to
With
The positive electrode side wiring fixing portion is
A positive electrode that has a positive electrode side insertion space inside, which is a space where the positive electrode side wiring contact portion is arranged and the positive electrode side wiring is inserted, and is a hole for inserting the positive electrode side wiring into the positive electrode side insertion space. A positive electrode side insertion member having at least one side insertion port and
The positive electrode side screw, which is the screw provided so as to be inserted into the positive electrode side insertion space from the outside of the positive electrode side insertion space with respect to the screw insertion port formed in the positive electrode side insertion member.
A plate-shaped member arranged in the positive electrode side insertion space, the plate surface thereof is arranged so as to face the positive electrode side wiring contact portion, and the positive electrode side follows the screwing of the positive electrode side screw. A positive electrode side pressing member configured to move to the wiring contact portion side,
By the tightening force of the positive electrode side screw acting on the positive electrode side wiring inserted between the positive electrode side pressing member and the positive electrode side wiring contact portion via the positive electrode side pressing member. The positive electrode side wiring is configured to be in pressure contact with the positive electrode side wiring contact portion.
The negative electrode side wiring fixing portion is
A negative electrode having a negative electrode side insertion space inside, which is a space where the negative electrode side wiring contact portion is arranged and the negative electrode side wiring is inserted, and is a hole for inserting the negative electrode side wiring into the negative electrode side insertion space. A negative electrode side insertion member having at least one side insertion port and
The negative electrode side screw, which is the screw provided so as to be inserted into the negative electrode side insertion space from the outside of the negative electrode side insertion space with respect to the screw insertion port formed in the negative electrode side insertion member.
A plate-shaped member arranged in the negative electrode side insertion space, the plate surface thereof is arranged so as to face the negative electrode side wiring contact portion, and the negative electrode side follows the screwing of the negative electrode side screw. A negative electrode side pressing member configured to move to the wiring contact part side,
The negative electrode side wiring is inserted between the negative electrode side pressing member and the negative electrode side wiring contact portion, and the tightening force of the negative electrode side screw acts on the negative electrode side wiring through the negative electrode side pressing member. The negative electrode side wiring is configured to be in pressure contact with the negative electrode side wiring contact portion.
Electric work machine. The electric work machine according to claim 1.
The positive electrode side insertion port is formed on each of a plurality of side surfaces of the positive electrode side insertion member that are not on the same plane.
The positive electrode side wiring is inserted into the positive electrode side insertion space through the positive electrode side insertion port by being inserted into any one of the positive electrode side insertion ports.
Electric work machine. The electric work machine according to claim 1 or 2.
The negative electrode side insertion port is formed on each of a plurality of side surfaces of the negative electrode side insertion member that are not on the same plane.
The negative electrode side wiring is inserted into the negative electrode side insertion space through the negative electrode side insertion port by being inserted into any one of the negative electrode side insertion ports.
Electric work machine. The electric work machine according to any one of claims 1 to 3.
The positive electrode side wiring and the negative electrode side wiring are both extended in the same direction from the terminal block by being inserted into the positive electrode side insertion port and the negative electrode side insertion port formed on the same side surface of the terminal block. Is laid in
Electric work machine. The electric working machine according to claim 4.
With a hollow housing
The housing includes a grip portion that is formed so as to extend in the axial direction with a specific axis as a substantially central axis and is gripped by a user of the electric work machine.
The mounting portion and the terminal block are provided at the end portion of the housing in the axial direction with respect to the grip portion.
The positive electrode side wiring and the negative electrode side wiring are laid in the housing so as to extend from the terminal block to the grip portion side in the axial direction.
Electric work machine. The electric working machine according to claim 4.
A motor that is rotated by electric power from the battery pack as the load unit is provided.
The positive electrode side wiring and the negative electrode side wiring are laid so as to extend from the terminal block in the axial direction of the rotation axis of the motor.
Electric work machine. The electric work machine according to any one of claims 1 to 3.
The positive electrode side wiring and the negative electrode side wiring are inserted into the positive electrode side insertion port and the negative electrode side insertion port formed on different side surfaces of the terminal block so as to extend from the terminal block in different directions. Is laid in
Electric work machine. The electric work machine according to claim 7.
The positive electrode side wiring is inserted into the positive electrode side insertion port formed on one of both side surfaces parallel to each other in the terminal block, and the negative electrode side wiring is inserted into the negative electrode side insertion port formed on the other side of the both side surfaces. By being inserted, the positive electrode side wiring and the negative electrode side wiring are laid so as to extend 180 degrees from the terminal block in opposite directions.
Electric work machine. The electric work machine according to any one of claims 1 to 6.
A control unit for controlling the operation of the electric work machine by directly connecting the positive electrode side wiring and the negative electrode side wiring as the load unit is provided so as to face a part of a specific side surface region of the terminal block. Be,
The positive electrode side wiring and the negative electrode side wiring are inserted into the positive electrode side insertion port and the negative electrode side insertion port formed in a region on the specific side surface where the control unit does not face, respectively, in the terminal block. , Both are laid so as to extend in the same direction from the terminal block.
Electric work machine. The electric work machine according to any one of claims 1 to 8.
A control unit for directly connecting the positive electrode side wiring and the negative electrode side wiring as the load unit to control the operation of the electric work machine is provided so as to face a specific side surface of the terminal block.
The positive electrode side wiring and the negative electrode side wiring are inserted into the positive electrode side insertion port and the negative electrode side insertion port formed on one side surface different from the specific side surface in the terminal block, respectively. It is laid so as to extend from the terminal block in the same direction and in a direction parallel to the specific side surface.
Electric work machine. The electric work machine according to any one of claims 1 to 10.
At least one of the positive electrode side insertion port and the negative electrode side insertion port
A tapered portion which opening areas are formed so as to gradually decreases the electric wiring of the insertion target toward the insertion space inside to be inserted,
A tubular wiring holding portion that is continuously provided from the end portion of the tapered portion on the insertion space side toward the insertion space, and
Is configured so that the electrical wiring to be inserted is inserted into the insertion space via the taper portion and the wiring holding portion.
Electric work machine. The electric work machine according to any one of claims 1 to 11.
The terminal block further includes a signal connection terminal that is connected to a signal input / output terminal provided on the battery pack when the battery pack is mounted on the mounting portion.
The plurality of electrical wirings include signal-side wiring for electrically connecting the signal connection terminal and the load unit.
The end of the signal side wiring opposite to the end connected to the load portion can be freely inserted and removed from the signal side wiring connection portion formed at the end of the signal connection terminal. Connected to the receptacle
The receptacle is fitted to the signal-side wiring connection portion so that the signal-side wiring is connected to the signal connection terminal.
Electric work machine. The electric work machine according to claim 12.
The signal side wiring connection portion is an electric working machine arranged between the positive electrode side wiring fixing portion and the negative electrode side wiring fixing portion.

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